Calculating machine and the like



Jan. 18, 1938. B. cARLsTROM ET AL CALCULATING MACHINE AND THE LIKE Filed Aug, 17, 1937 February 27, 1930 (see Patented Jan. 18, 1938 UNITED STATES PATENT OFFlCE 2,105,520 CALCULATINGMACHINE AND 'mn LIKE Bengt (larlstriirn and Roy assignors to Aktiebolaget Sweden, vidaberg, Sweden Sweden,

Hanson, Atvidaberg,

Fa'cit, At-

a joint-stock company of Application August 17, 1937, Serial No. 159,483 In Germany August 18, 1936 Claims.

.the tabulating device in such machines very compact.

Another object of this invention is to render the locking means for preventing incorrect manipulation very simple.

Another object of this invention is to render the ordinary locking rail and locking pawl or arm superfluous. o

Other objects of this invention will be evident from the following specification and claims.

One embodiment of this invention is illustrated in the annexed drawing.

Fig. lshows a front view of a tabulating device in accordance with this invention.

Fig. 2 is a vertical section on the line IL-II in Fig. 1.

Fig. 3 is a section on the broken line III-III in Fig. 2. a

The machine shown may be constructed, in its principal features, for instance, as shown and described in United States Patent application, Serial No. 431,872, filed by Karl Viktor Rudin on German Patent No. 535,576), andUnited States Patents No. 1,927,771 and 2,068,899. However, in every multiplying machine the results register and its actuator must be moved in relation to each other and "analogously the quotient register and its op- "erator must be moved in relation to each other '(cf. the United States Patent application Serial No. 756,823, filed on December 10, 1934). reason tabulating means are necessary in all such machines. Also in modern ten-key adding machines tabulating means are often used.

Referring now to the drawing, I indicates a displaceable carriage which is guidedfor rectilinear motion on two shafts 2 which are rigidly secured to the stationary frame 3 of the calculating machine. a

' Odhner rotor, a selector, etc., therefor. If' the totalizer is on the carriage, the actuator is stationary, at least during the calculating operations, and vice versa, as well-known in the art. On a shaft 4, which is also stationarily secured to the frame 3, two step-tabulating keys 5 and 6 are rockably journalled, having each an oblong slot Ia through which a stationary shaft For this tion with the same.

1 extends. The shaft I limits the motion of the keys in both directions. The keys are retained in their positions of restby means of tension springs 8. On pins 9 of the keys pawls I0 and I I are piv otally mounted which are pressed against the side 5 surface of a toothed wheel I3 by tension springs I2. The ends of the tension springs I2 are attached to pins I2a on the pawls and to pins I2b on the keys, respectively. The key 5 has the pawl I0 and the key 6 carries the pawl II.

The gear wheel I3, which is rotatably mounted on theshaft I3a in the machine frame, has a number of pins I4, five of them being provided in the embodiment illustrated. The wheel I 3 meshes with another toothed wheel I5 having two dia- 15 metrically opposed pins I6. 'The wheel I5 is journalled on the stationary pin I512 on the machine frame. The ratio of gear of the wheels l3 and I5 is so chosen that a rotary motion of the wheel I3 through anangle corresponding to the pitch go of the pins I4, i. e. one-fifth of a, revolution, or 72 causes the wheel I5 to rotate through an angle corresponding to one-half revolution, or

The pins I6 engage a toothed rack II which 35 is pivotally mounted on the pin I8 of the carriage; I., Adjacent to the ends of the rack I1 rigid abutments I9 are provided onthe carriage, said abutments projecting at right angles to the row of teeth of the rack. The tabulating keys 5 and 30 6 each have a projecting arm 20 which on the depression of the key is moved upwardly to engage a pin .2I on a lever 22. This lever ispivotally mounted on the fixed shaft 23 and provided with a pin 24 extending at right angles to the pin 35 2| and engaging the rack I! from above. The arm 22 is also provided with a projection or lug 25 adapted to engage a recess in the disk 26 secured on the shaft 21 which may be the main or driving shaft of the machine or a shaft positively connected with the driving shaft for rota- In a manually. operated machine, the shaft 21 may be the handle or crank shaft, on which the actuator is journalled. In a power-driven machine the shaft 21,may be 45 a shaft driven by the motor, such as shaft 5 in U. 5. Patent No. 2,068,899. The pin 24 is pulled into engagement with the top portion of the rack 'pins It. At the same also serves to keep the 32 in engagement with the At its upper end each cam 29 has a recess 23a.-

engaged by the projection 3| or 32, respectively, if the lever 300 is swung correspondingly.

About a pin 31 on the carriage i a doublearmed lever 33 is pivotally mounted. At its upper free end this lever carries a handle 34 or the like, while the lower end of the lever carries a pin 35 entering a recess 36 oi the rack 11. The recess 36 is angular, that is has two inclined surfaces along which the pin lsadaptedto 'slide. The device described operates as 'follows: When one or the tabulatlng keys is depressed, for instance, the right hand key 6, the corresponding pawl II is lifted and engages the adjacent pin l4, wheel l3 are rotated through an angle corresponding to the pitch of the pins, which is 72. Consequently, the wheel l5 will be rotated-half a revolution causing the pins toothed rack l1 and thus also the carriage I one step, that is a distance corresponding to the pitch of teeth of the rack II, The toothed rack l1 thenyields accordingly, that is, it is swung somewhat upwards. Towards the end of this motion of the key the abutment 20 strikes against the pin 2| and, with the aid of the spring 28, forces'the lever 22 to swing clockwise in Fig. 2, so that the pin 24 forces the rack I1 down into its lowermost or locking position.

I! is raised or swung upwards as a result thereof it swings the lever-22 accordingly, causing the projection 25 to enter the recess of the disk 26,

so that the main shaft 21 of the machine cannot be rotated, while tabulation is being efiected. Tabulation having been terminated, the disk 26 is released in the manner indicated above when the lever 22-is swung in a clockwise direction,

Upon depression of the tabulatlng key 6 the corresponding cam 29 will actuate the projection 32, so that the projection 3i'is swung in against the rear side of the pawl l and thus moves the latter out of the way of the adjacent one of the time, the projection 3 I engages the recess 29a of the key 5, so that the latter is locked and cannot be depressed.

I When the tabulator key is depressed the carriage will be tabulatedin an analogous manner step-by-step to the left, the pawl ll being then pressed out of the path of the adjacent pin l4 through the action of the arm 32., ,Total tabulation for division is effected by means of the arm 33 which, when actuated, by its'pin 35 lifts the rack H from the pins 16. The carriage may be'displ'aced directly by means of thehandle -34 in'any direction, because the pin 35 then slides on the corresponding obliquesurface of the recess 3G and lifts the rack l1. 2

Certain modifications may be made in the y dedescribed, without departthe arm 33 may be operated from a specialtotal tabulatingor division key. The projections I9 atthe ends of the row of teethof thev rack H,

.which serve to limit the I tabulation by preventing the wheel l5 from rotating, when the end of the tabulatlng motion in both directions has been reached, maybe arranged on the irame o! the machine.

' It is to be observed that the tabulatlng rack ll carriage in its position when tabulation does not take place. This renders the special locking bar superfluous which is so that this pin and thus the gear IE to move theto the right in Fig. 1..

When a tabulator key is depressed and the rackordinarily used, and which -is provided with a series of recesses, one for each tabulatlng position, adapted to be engaged by a slide or an arm that must be brought out of engagement every time when a tabulation is to be made.

What we claim is:-

1. In a tabuiating device for a calculating machine and the like, in combination, a rectilinearly movable carriage, a disk, pins on said disks, means for rotating saiddisk step-by-step, and a toothed rack on said carriage meshing with at least one of said pins, said rack being movable at an angle to the rectilinear path of motion of said carriage, 'while still remaining in mesh with one of said pins.

2. In a. tabulatlng device for a calculating machine and the like, in combination, a rectilinearly movable carriage, a disk, pins on said disk, means for rotating said disk step-by-step, and a toothed rack on said carriage meshing with at least one of said pins, said rack being journalled on said carriage and rockable between a position parallel with the rectilinear path of said carriage and a'position at an angle to said a toothed rack on said carriage meshing .withat least one oisaid pins, said rack being displaceable on said carriage substantially in, parallel to itself and at an angle to the said carriage, between a position of rest and an off-normal position, while still remaining in mesh with one of said pins.

4. In a tabulatlng mechanism for calculating disk, pins on said. disk, 1

rectilinear path of I machines and the like, in combination, a car.-

riage displaceable in a rectilinear path, astationary pivot, a disk rotatably journalled on. said pivot,'pins on said disk, manually operated means -for rotating said disk step-by-step, atoothed rack on said carriage meshing with atleast one of said pins, said rack being movable at, an

angle to therect'ilinear path of said carriagev from a position of rest to an off-normal position and back again, while still remaining in mesh with one of said pins, and a restoring member for restoring said rack to its position of rest.

5. In a tabulatlng-mechanism for calculating machines and the like, in combination, a carriage displaceable in a rectilinear path, a stationary pivot, a disk rotatably journalied on said pivot, pins on said disk, manually operated means for rotating said disk step-by-step, a toothed rack on said carriage meshing with at least one of said pins, said rack" being movable at an angle to the rectilinear path of said carriage from a position of rest to an off-normal position and back again, while still remaining in mesh with one of said pins, and a restoring spring for restoring said rack to its position of rest and for counter-acting its motion from said position of rest. 3

6. In a tabulatirrg mechanismv for calculating machines and the, like, in combination, a carriage displaceable in a rectilinear path, a stationary pivot, a disk rotatably journalled on said pivot, pins on said disk, manually operated means for rotating said disk step-by-step, a toothed rack on said carriage meshing with at least one of said pins, said rack being movable at an angle to the rectilinear path of said car-.

-otir aioauao I 3 position and back again, while still remaining in mesh with one oi said pins, and a main driving shaft carrying a locking disk, said locking disk having a recess in the path of a part of said lever to be engaged thereby, when said lever is rocked by said rack.

7. In a tabulating mechanism for calculating machines and the like, in combination, a carriage displaceable in a rectilinear path, a stationary pivot, a'disk rotatably journalled on said pivot, pins on said disk, manually operated means for rotating said disk step-by-step, a toothed rack on said carriage meshing with at least one of said pins, said rack being movable at an angle to the rectilinear path of said carriage from a position of rest to an off-normal position and back again, while still remaining in mesh with one of said pins, a lever having one of its ends in engagement with said rack to be swung thereby. a restoring spring for said rack engaging said lever, a main driving shaft, and a locking disk secured to said main driving shaft, a recess in said locking disk being in the path of motion of a part of said lever, when said rack is in its oflnormal position.

8.;In a tabulator for calculating machines and the like, in combination, a carriage displaceable in a rectilinear path, a rotary disk, pins on said disk, a manually operated key, a pawl on said key, said pawl being operatively connected with said disk for rotating the latter step-by-step upon manual actuation of said key, a toothed rack on said carriage meshing with at least one of said pins, said rack being movable at an angle to the rectilinear path of said carriage, while still remining in mesh with one of said pins, and a lever having one of its ends in engagement with said rack, a part of said lever being in the path of motion of said key to be engaged thereby near the end of the stroke of said key.

9.. In a tabulator for calculating machines and the like, in combination, a carriage movable on straight, guides, a rotary disk, pins on said disk, manually operated keys, pawls on said keys, said pawls being 'operatively connect-ed with said disk for rotating the latter stepwise upon manual actuation of said keys, a toothed rack on said carriage meshing with at least one of said pins, said rack being movable at an angle to said guides, while still remaining in mesh with one of said pins, cams on said keys, and a double-armed lever in engagement with said cams. said pawls being in the path of motion of said lever to be alternatively put out of operation thereby.

10. In a tabulator for calculating machines and the like, in combination, a carriage movable on straight guides, a rotary disk, pins on said disk, manually operated keys, pawls on said keys, said pawls being operatigely connected with said disk for rotating the lattes, stepwise upon manual actuation of said keys, a toothed rack on said carriage meshing with at least one of said pins, said rack being movable at an angle to said guides, while still remaining in mesh with one ofsaid pins, cams on said keys, said keys having recesses at one end of said'cams, and a double-armed lever in engagement with said cams, said recesses being in the path of motion of said lever to lock one key, when another is depressed 11. In a tabulator for calculating machines and.

the like, in combination, a straight guide, a carriage movable along said guide, a first toothed wheel, pins on said first wheel, atoothed rack on said carriage meshing with at least one of said pins, said rack being movable at an ang'leto said guide, while still remaining in mesh withsaid pins, 8. second toothed wheel in mesh with said first wheel, projections on said second wheel, manually operated tabulating keys, pawls on said keys normally engaging two of said projections in opposite directions of rotation of said second wheel, cams on said keys, and a double-armed lever in engagement with said cams, said pawls being in the path of swinging motion or said lever to be alternately disengaged from said projections thereby.

12. In a tabulating mechanism for calculating machines and the like, in combination, a carriage displaceable in a rectilinear path, a stationary pivot, a disk rotatably journalled on said pivot, pins on said disk, manually operated means for rotating said disk step-by-step, a toothed rack on said carriage meshing with at least one of said pins, said rack beingmovable at an angle to the rectilinear path of said carriage from a position of rest to an oil-normal position and back again, while still remaining in mesh with one of said pins, and abutments at the ends of the row of teeth of said rack to limit the rotation of said disk.

13. In a tabulating mechanism for calculating machines and the like, in combination, a carriage displaceable in a rectilinear path, a stationary pivot, a disk rotatably journalled on said pivot, pins on said disk, manually operated means for rotating said disk step-by-step, a toothed rack on said carriage meshing with at-least one ofsaid pins, said rack being movable at an angle to the rectilinear path of said carriage from a position of rest to an oil-normal position and back again, while still remaining in mesh with one of said pins, and abutments secured to said carriage ad jacent to the ends of the row of teeth of said rack to limit the tabulation in both directions.

'14. In a tabulating mechanism for calculating machines and the like, in combination, a carriage displaceable in a rectilinear path, a stationary pivot, a disk rotatably journalled on said pivot, pins on said disk, manually operated means for. rotating said disk step-by-step a toothed rack on said carriage meshing with at least one of said pins, said rack being movable at an angle tothe rectilinear path of said carriage from a position of rest to an off-normal position and back again, while still remaining in mesh with one of said pins, and means for moving said rack out of engagement with said pins.

15. In a tabulating mechanism for calculating machines and the like, in combination, a carriage displaceable in a rectilinear path, a stationary pivot, a disk rotatably journalled on said pivot, pins on said disk, manually operated means for rotating said disk step-by-step a toothed rack on said carriage meshing with at least one of said pins, said rack being movable at an angle to the rectilinear path of said carriage from a position of rest to an off-normalposition and back again, while still remaining in mesh with one of said pins, a manually operated lever journalled on said carriage, and a pin on saidlever engaging an angle-shaped iecess in said rack.

BENGT cams'moM. ROY HANSON. 

